Mask for face pack



FIG. 1 is a perspective view of a mask for face pack showing my new design;

FIG. 2 is a front view thereof, a rear view being the same as the front view;

FIG. 3 is a plan view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a right side view thereof, a left side view being the same as the right side view. 

The ornamental design for a mask for face pack, as shown and described. 